Upland man arrested for reportedly having sex with teen girl

UPLAND - A 24-year-old Upland man is behind bars after the mother of his reportedly underage girlfriend found out about their relationship and called Upland police, officials said.

Jamieson LaQuinn Knox was arrested last week at a home in the 1400 block of West Seventh Street in Upland on suspicion of unlawful sex with a minor, said Lt. Anthony Yoakum with the Upland Police Department.

Authorities were contacted by a woman who said she had just learned that her teenage daughter was reportedly having a sexual relationship with Knox, officials said.

Officers conducted an investigation and served a search warrant on Tuesday at Knox's home and found evidence of the relationship.

Investigators do not believe there are any more victims in this case.

Knox was booked into West Valley Detention Center in Rancho Cucamonga. His next court appearance is pending.